How to install floor spring？

Floor spring installation is not a simple job.It should be done by the skilled persons.Wrongly installation may cause noice,oil leaking or speed problems.

The steps are as below:

1.Choose the suitable floor spring according to the door weight and width.2.Decide the ground digging hole position and size.3.Cut and dig the ground hole.4.Put and fix the cement box with the floor spring.5.Put the door on the floor spring.6.Adjust the floor spring position inside the cement box.7.Adjust the closing speed and latching speed.8.Cover and fix the plate.